top-tool

from The Century Dictionary.

• noun A forging-tool resembling a cold-chisel or a short thick spike, held when in use by means of a flexible handle of hazel-wood or wire. When its cutting edge is round it is called a top-fuller.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Blacksmithing.) A tool applied to the top of the work, in distinction from a tool inserted in the anvil and on which the work is placed.